Note: There’s been a longer than normal interval between posts as there was more than usual work involved with this one.

Science fiction is very probably my first genre love. As readers of this blog already know, this affinity began with Star Trek. Given that, it won’t be surprising that my taste in scifi is generally best served when the setting is against the backdrop of a human interstellar presence. My story set in ancient Greece has been replaced as a priority with a novel-in-progress that takes place almost 50 light-years from Earth and roughly 550 years in the future.

Part of my outline process usually involves a map of some sort. This scifi effort (working title, Astral) is no different. By making a chart of most of the stars within 50 ly of our solar system, details about the future politics of humanity came into sharper focus. This is as much a part of the world building for the tale as FTL travel, terraforming, and human genetic engineering.

The volume around Earth at the given radius includes at least 583 star systems. There are red and white dwarf stars not shown in the first chart. Similarly, the stars shown do not double up with regard to arity (binary, trinary, and so on). If habitable worlds may be assumed to orbit stars like the Sun, about 10% ±x of these systems could support life. It should be noted, since extrasolar discoveries are being made “all the time”, no real effort was made to match exoplanet reality.

A presumption was made that faster-than-light travel would have limitations based on mass and material composition of any ships involved. Relatively instantaneous hops of 20 light-years or fewer are the standard.

This decision puts ten systems with potential for colonization within direct reach of Earth. Each colony would then become a waypoint for the next tier of expansion. The result would be a web of worlds, each having a neighborhood of 10 other colonized systems on average including 2 colonies of their own.

The first question after making these determinations was, “How far from Mother Earth would humanity spread before thinking of their new home world as more important than the origin point of the species?” The answer lay as much with history, sociology, and psychology as with astrophysics. The critical star turned out to be Xi Boötis (ξ Boo, “zai boh-oh-tis”). Two hops from Earth, with 70 Ophiuchus in between as the staging point, Xi could have almost as many imperial opportunities as the initial starting point of the human race.

The expanding network of worlds colonized from Xi (and the colonies growing from those, etc.) would reach to between 20 and 30 more systems by the time humanity began to push outside the 50-ly radius sphere. If such a significant branch of colonial propagation were to stage a revolution, Earth society could be thrown into a panic. What’s more, other factions might seize the event as an opportunity for their own independence – to one degree or another.

All of this is the backdrop of Astral, with Xi and its extended family as the new hub of human destiny in space (for the time being) and two other, though smaller, federations as political entities separate from Mother Earth. Apart from ME, the factions are Federalist Arcadia* (sharing in etymology with Arcturus, one of two “named” stars among those claimed from Xi), the Hamarchy of Keid*, and the Ophiuchid Cantons*.